Telex UAD4 Antenna Placement for Optimum Range and Rack Mounting, Rack Mounted Antenna Connectors

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Antenna Placement for Optimum Range and Rack Mounting

For maximum range and when rack mounting, the antennas must be remotely located.

The ALP-450 comes complete with a variety of mounting hardware and 10 feet (3 meters) of low loss coaxial cable. A combination mounting bracket (Model No. AB-2) with 10 feet of coax- ial cable is available for 1/2 wave antennas.

Antennas should be placed in a location with a clear “signal path” to the transmitter. This “path” should be as short and free of obstructions as possible. Obstructions, such as walls ceilings, and metal objects, will reduce range and perfor- mance.

Rack Mounting

Insert the unit into a 19" rack enclosure and se- cure with screws (not supplied).

Rack Mounted Antenna Connectors

Antenna cable connections may be made to the front of the rack mounted UAD4 by installing the adaptor cables supplied. Proceed as follows:

￿Remove the plug “knock outs” from the front panel. See Figure 6.

￿Install the adaptor cables from the back side of the bracket.

￿Tighten the nut and lockwasher securely.

￿Attach the other end of the cables to the in- puts of the UAD4. Tighten securely.

Front of rack antenna connectors were de- signed to allow easier hook up of antenna ca- bles. We do not recommend mounting antennas directly to the connectors since per- formance may be degraded.

Coax Cable

For best results, it is recommended that cable losses be kept under 4 dB. (Every 3 dB of signal loss results in a system operating distance reduc- tion of 25%.

See the accessories section of this manual for special low loss cable assemblies.

REMOVE PLUG

Figure 6

Antenna Connectors

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Contents General Description FeaturesRear View Front and Rear View System ConfigurationFront View Cascading System ConfigurationAntenna Requirements Antenna PlacementRack Mounted Antenna Connectors Antenna Placement for Optimum Range and Rack MountingAntenna Connectors Rack MountingMoving Jumper Be sure to move jumper on both headers Volt Power On Antenna In JacksTP-2 50 OHM/TNC dummy load AC Power CablesUAD4 Cables Model Type UAA-500Telex COMMUNICATIONS, INC. All rights reserved July